Jump to main content
Jump to site search
SCHEDULED MAINTENANCE Close the message box

Maintenance work is planned for Monday 16 August 2021 from 07:00 to 23:59 (BST).

Website performance may be temporarily affected and you may not be able to access some PDFs or images. If this does happen, refreshing your web browser should resolve the issue. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 19, 1997

µ-Oxo bridged diiron(III) complexes and hydrogen peroxide: oxygenation and catalase-like activities

Abstract

The crystal structures of two dinuclear iron(III) compounds with a bent µ-oxo bridge, [Fe2O(CH3CO2)(tpa)2][ClO4]3· 2H2O and [Fe2O(CH3CO2)(mep)2][ClO4]3, were determined, where tpa and mep represent tris(2-pyridylmethyl)amine and N,N′-dimethyl-N,N′-bis(2-pyridylmethyl)ethane-1,2-diamine, respectively. Their structural features which include a (µ-oxo)(µ-acetato)diiron(III) core are very similar. In spite of this, these two complexes exhibit very different reactivity towards hydrogen peroxide in solution; the tpa complex showed high catalase-like activity, whereas that of the mep complex was negligible. In the oxygenation of cyclohexane the mep complex–H2O2 system exhibited high activity giving cyclohexanol and cyclohexanone, but formation of oxygenated products was negligible with the tpa complex–H2O2. The absorption spectrum of the tpa complex shows no change in the presence of H2O2; however a drastic change was observed in the spectrum of the mep complex on addition of H2O2. Based on the structural and spectroscopic data, the structures of the active species for catalase- and oxygenase-like functions and the origin of the differences in reactivity observed for these two compounds are discussed.

Article information


J. Chem. Soc., Dalton Trans., 1997, 3547-3551
Article type
Paper

µ-Oxo bridged diiron(III) complexes and hydrogen peroxide: oxygenation and catalase-like activities

T. Okuno, S. Ito, S. Ohba and Y. Nishida, J. Chem. Soc., Dalton Trans., 1997, 3547 DOI: 10.1039/A700030H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.


Search articles by author

Spotlight

Advertisements